Perhaps you should try some spelling variations:
"coder coder parametric and problem" » "coder under parametric and problem" (Expand search), "coder mode parametric and problem" (Expand search), "coder bodies parametric and problem" (Expand search), "coder decoder parametric and problem" (Expand search), "code code parametric and problem" (Expand search), "decoder codec parametric and problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search), "rpa python python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder parametric and problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder parametric and problem\") OR (\"api python python python programming\"))*".
• Removing quotes may allow a broader search: (( coder coder parametric and problem ) OR ( api python python python programming ))*.